Pneumatic tire.



P. H. PERRY.

PNEUMATIC TIRE.

APPLICATION FILED DEG. so, 1908.

Patented June 8, 1909 PATENT orro FREDERICK H. PERRY, BEVERLY, MASSACHUSETTS.

rnnumatrre man.

Specification of Letters Patent.

Patented Tune 8, 1909. 7

Application filed December 30, 1908. Serial No. 469,935.

To all whom it may concern:

Be it known that I, FREDERIGKH. PERRY, a citizen of the United States, residing at Beverly, in the county of Essex and Stateof Massachusetts, have invented certain new and useful Im roveme'nts in Pneumatic Tires and I do ereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use thesame.

My invention relates to pneumatic tires for wheeled vehicles and more particularly that type of automobile tires known as clenclier tires, in which an inflated inner tube is confined and protected by an outer and thicker tube, generally known as a shoe. Theseshoes are stout and heavy annular tubes open u on the inner surface, or at that portion whic 1 fits into the rim of the wheel, in order to admit the insertion and removal of the inner tube as required, and the marginal edges of this rim portion of the shoe are formed in the shape of ribs or shoulders which take beneath the overhanging flanges which form the channel or groove of the rimof the wheel. The ribs or shoulders of the shoe which constitute the elencher portion,

are made of a hard substantially non-elastic material and are generally strengthened by means of cords, strips of canvas and the like, which are embedded in the rubber during the process of manufacture and which extend annularl about the shoe. Thusit results that while the shoe is made of rubber this clencher portion is practically inelastic and much trouble and annoyance results when it becomes necessary to either remove or replace a shoe on the wheel. The overhanging flanges which form the groove or channel in the rim are somewhat larger in diameter than the diameter of the central opening in the shoe and in order to remove or replace a shoe it is necessary to spring the ribs of the clencher ortion over the flanges and .because of tlie practically inelastic character of the ribs of the shoe this is accomplished only under considerable difliculty and often w ith injury to the shoe. v

The object of the present invention is to produce a clencher tire shoe which canbe readily placed on the rim of a Wheel or removed therefrom but'which will be as sei heretofore devised and which will protect the inner tube in as efficient a'manner.

With this object in view the invention con i sists in the shoe for pneumatic tires hereafte K described and claimed.

The preferred form of the present invention is shown in the accompanying drawing,

in. which Figure 1 shows in pore ctive a portion of a shoe and the rim of a w reel illustrating one form ofmy invention. Fig. 2 shows in per 'spectlve a portion of a shoe showing the under side or rim part, and'Fi' 3 shows in perspective a portion of a shoe lo oking at the inrun surrace.

In the drawing, 1 indicates the rim of a wheel such as is usually used in connection with the so-called olencher tires andhaving along each edge the overhanging flanges 2 which form a channel 3, which receives the rim or clencher portion of the shoe.

' The shoe 4 is, except as will be hereinafter set forth, of the usual construction, having the shouldered clencher portions or ribs 5 and being divided at 6 to give access to the inner chamber 7, which receives the inner inflatable tube 8. The clencher portions 5 are composed of the usual hard non-elastic material and are provided with the usual bands or strips 9 of canvas or other suitable mst'teriah In accordance with the present invention the clench'er portions 5 of the shoe are cut through to the desired extent and in the desired number of places as shown at 11, and these cuts are filled with soft rubber or other suitable elastic material, as indicated at 12, said material being secured in any suitable manner, such for instance as by vulcanizmg:

The cuts 11 permit the clencher portions S te stretch read1ly so that the shoe can be reads ily removed from the rim or replaced there, on. The elastic filling material 12 in the cuts forms a smooth unbroken surface for the thin inflated tube 8 so that the tube when eX a continuous and smooth bearing surface and present substantially the same appearance as 111 an ordinary clencher tire shoe.

In accordance with the broader features of my invention the cuts 11 may extend through the clencher portions of the tire in any desired direction. It is preferred, however, to have the cuts extend in a direction obli ue to the circumference of the tire as shown e early in Fi 5. land 3, as thereby a comparatively thin p or edge 13 is formed on the outer external surface of the clencher portion of the tire which is engaged and pressed down by the overhanging portion of the rim 2. The compression of this thin lip by the rim effectually closes the cut at the point Where it comes nearest to the edge of the rim and thus water, dirt and other foreign substances are more v eil'ectually )revented from passing through the cut to the inner surface of the rim. their: would be the case if the cuts were radial.

Having described my invention, I claim as new and desire to protect by Letters Patent of the United States A shoe for a elencher pneumatic tire, the cleneher portion of which is provided with a cut and an elastic filing secured in such cut and forming a part oi the clenchcr portion, substantially as described.

In testimony whereof I allix my signature, in presence of two witnesses.

F EDERICK H. I ERR Y.

Witnesses:

WARREN G. OGDEN, FRED O. Frsn. 

